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Numero eSIM not working? Reasons and how to fix it
Having trouble with your Numero eSIM not working? Find out why and how to fix it fast.
If your Numero eSIM shows “No Service,” don’t stress; it’s usually a simple setup error that’s easy to fix.
This guide will provide you with everything you need to fix your Numero eSIM. For those with persisting problems, consider an alternative provider, such as Holafly. It offers an unlimited data plan, among others, with global coverage, unlimited hotspot capabilities, SMS reception, instant activation via QR code or app, and 24/7 support.
Holafly is highly rated
With a Trustpilot rating of 4.6/5 from 50,000+ reviews, our eSIMs come with a seal of approval.
Why is my Numero eSIM not working?
When a Numero eSIM won’t connect, the problem usually lies in your phone’s setup rather than the eSIM itself. Whether your Numero eSIM is not working on an iPhone or Android device, the most common causes are listed below.
Your device doesn’t support eSIM or is carrier-locked
Some phones, especially older or region-specific models, don’t support eSIM. Similarly, a locked phone can’t activate eSIMs from other providers.
Mobile data or data roaming is turned off
This is usually the first problem people come across, as both must be enabled for your eSIM to access local networks abroad.
The local network isn’t connecting automatically
If your phone doesn’t pick up a carrier on its own, you may need to select one manually in the settings.
Incorrect or outdated APN settings
Each eSIM provider uses a specific APN (Access Point Name) configuration. If it’s missing or incorrect, your phone won’t be able to connect to the internet.
In the next section, you’ll find step-by-step instructions to address each of these issues.
How to fix a Numero eSIM
Follow the steps to resolve most connection issues.
Check if your device supports eSIMs and isn’t carrier-locked
- Verify eSIM compatibility.
First, you’ll want to confirm that your phone supports eSIM technology.
You can do this by searching Google for “eSIM compatibility” along with your device model, or by checking our list of eSIM-compatible phones.
- Confirm your phone is unlocked.
This is important because a locked phone cannot activate eSIMs from other providers.
- iPhone: Settings > General > About. Scroll down to Carrier Lock. If it says “No SIM restrictions,” you’re in the clear.
- Android: Insert a SIM card from another carrier. If it works, your device is unlocked.
Restart your phone after eSIM installation
After installing your Numero eSIM, restart your device to allow it to register on the local network.
- iPhone: Press and hold the side button and volume button, then slide to power off. Wait a few seconds and turn it back on.
- Android: Press and hold the power button, then tap Restart.
Turn on data roaming
Your eSIM won’t connect outside of your home network without data roaming enabled.
- iPhone: Settings > Mobile Service > [Numero eSIM] and toggle on Data Roaming.
- Android: Settings > Network & Internet > [Numero eSIM] > Roaming and toggle on Data Roaming.
Enable and disable Airplane Mode
Sometimes your device needs a network refresh.
To do it, turn on Airplane Mode for about 5–10 seconds, then turn it off again. This forces your phone to search for the correct local network.
Manually select a local network in settings
If your phone doesn’t automatically connect to a network, you’ll need to select one manually.
- iPhone: Settings > Mobile Service > Network Selection and turn off Automatic. Then, choose a local carrier from the list.
- Android: Settings > Connections > Mobile Networks > Network Operators and select a carrier manually.
Update or reset your APN settings
Incorrect APN settings can block data access.
- iPhone: Settings > Mobile Service > Mobile Data Network and enter the APN provided by Numero.
- Android: Settings > Connections > Mobile Networks > Access Point Names. Then, add or edit the APN according to the details in your Numero installation email.
If you’re unsure, contact Numero support for assistance.
Reset your network settings
If all else fails, you’ll have to reset your network configuration to remove any conflicting settings. This, however, will erase saved WiFi networks and Bluetooth pairings, so proceed with caution.
- iPhone: Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.
- Android: Settings > General Management > Reset > Reset Network Settings.
If you are looking for an alternative to Numero eSIM, as it still isn’t working after these seven steps, contact Numero’s support team via live chat or email to request assistance or a refund.
Alternatively, check out Holafly’s eSIM store (available on iOS and Android). It offers unlimited data plans, instant activation via QR code or app, and 24/7 customer support, so you can stay connected without interruption.
Choose Holafly for peace of mind as you travel
For those looking to delete Numero eSIM after all the above troubleshooting attempts, consider switching to a more dependable provider can save time and effort. Holafly offers a simple, reliable alternative designed for travelers who want instant connectivity without technical issues.
With us, setup takes just minutes.
You can scan a QR code or install your eSIM directly through the Holafly app on iOS. Once activated, your data connects instantly. No manual configuration required.
Still undecided? See our Holafly eSIM vs. Numero eSIM breakdown for an easy comparison.
An eSIM you can rely on
Join over 10 million Holafly customers and get connected with our trusted, global services.
For those looking for a longer-term solution, check out Holafly Plans. Our unlimited data plans allow you to travel without worrying about running out of data in over 270 destinations. At the same time, 24/7 customer support ensures help is always available if something goes wrong.
Disclaimer: The data in this article is accurate as of November 21, 2025, and is subject to change.
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I am a Liverpool-based SEO content specialist with years of experience crafting content that connects. I combine my love for clear communication with a passion for travel and languages (currently diving into Japanese!). At Holafly, I'm here to help you understand everything about staying connected abroad, turning technical jargon into straightforward advice you can actually use.
